Valve-grinding mechanism.



No. 693,967. Patented Feb. 25, I902.

A. HENNING.

VALVE GRINDING MECHANISM.

(Application filed. Oct. 31, 1901 I 2 Sheats-Sheet I.

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Patented Feb. 25, I902. A. HENNING. VALVE GRINDING MECHANISM.

(No Model.)

(Application filed Oct. 31. 1901.)

2Sheets-Sheet 2.

THE unams PETERS co PHOTO-LITHQ. WASHINGTON, n c.

UNITED STATES PATENT OFFICE.

ABEL HENNING, OF ANN ARBoR, MICHIGAN, ASSIGNOR oF' Two-THIRDs To A HENRY W. DOUGLAS, or ANN ARBOR, MICHIGAN.

VALVE-GRINDING MECHANISM.

sPEcrFIcATroN forming part of Letters Patent No. 693967, dated February 25, 1902.

Application filed October 31,1901. Serial No. 80,713. (No model.)

To all whom it may concern Be it known that I, ABEL HENNING, a citizen of the United States, residing at the city of Ann Arbor, in the county of Washtenaw and State of Michigan, have invented certain new and useful Improvements in Valve-Grinding Mechanism, of which the following is a specification.

This invention relates to a new and im- :e proved device for grinding the valves on gasmeters, although the structure is very well adapted for similar operations in other structures.

The valves in gas-meters become corroded T5 or from their operation become slightly displaced and do not seat properly, so that it is necessary at intervals to grind the valves, so that they seat and cause the proper operation of the meter. This has heretofore been done by workmen placing the end of a file on a grinding-plate which is provided with a sheet of emery on one side and moving the same with a slight rotary motion on a valve-seat. This requires considerable skill on the part 2 5 of the workmen and is very slow in its operation and but one valve-seat can be ground at a time. p

The objects of the invention are, first, to provide a suitable machine for accomplishing 0 this purpose without dissembling the meter further than to remove the valve-lids; second,'to provide an improved structure whereby a proper rotary motion under pressure will be imparted to a valve-grin'dingplate to 5 accomplish the desiredresult, and, third, to

provide a structure whichis readily attached and detached to a meter whereby its operation is facilitated. 1

Further objects will definitely appear from 0 the detailed description to follow.

I accomplish the objects of my invention by the devices and means described in this specification.

The invention is clearly defined and point- 5 ed out in the claims.

A structure embodying the features of my invention is fully illustrated in the accompanying drawings, forming a part of this specification, in which- Figure 1 is a detail side elevation view of my improved valve-grinder in position on a of my improved grinding-machine.

gas-meter, portions of the meter being broken away to show details and the coupllng for the machine being shown in section. Fig. 2 is an enlarged detail sectional view on line 2 2 of Figs. 1 and 3, showing details of the adjusting-clamps and frame. Fig. 3 is a detail front elevation'view of the structure appearing in Fig. 1, the meter being shown insection on a line corresponding to line 3 3 of Fig. 1, one of the spring-pressure devices being shown in section to show details of its construction. Fig. 4 is a detail sectional plan view taken on a line corresponding to line 4: 4 of Fig. 8, showing the position and opera.- tion of the valve-grinding plates. Fig. 5 is a detail sectional plan view on line 5 5 of Fig. 3, showing details of the valve-grinding plates and their connections, the position of the valve-seats being indicated by dotted lines beneath. Fig. 6 is a detail sectional view taken on a line corresponding to line 6 6 of Fig. 5. r

In the drawings all of the sectional views are taken looking in the direction of the little arrows at the ends of the section-lines, and similar letters of reference refer to similar parts throughout the several views.

Referring to the lettered parts of the drawings, A is a meter, and A A are the upwardly-projecting casings, on the upper ends of which are formedthe valve-seats, as clearly appears in Figs. 1 and 3.

A is the gas-pipe at the side of the meter, which is utilized as the base for the support A pin 0 is secured to the top thereof by a suitable union C and projects upward and is embraced by the clamp B, which is adjustable up and down thereon and which carries the main frame 13 of the machine. 'The horizontal bracket B extends from this main frame, and in this is journaled a vertical shaft E, which is slightly offset at the bottom to form acrank andv has a gear F, which is actuated from a beveled gear F, supported on a suitable loop extending up from the frame B, andthis is actuated by a crank D on the shaft D. Pins G G are secured by the adjustable arms G to the bracket B and are held adjustably in position by the screw-nuts a a, so that the pins G can be moved into proper relation to IQO v the valve-seats no matter what design of meter it is intended to work upon. Arms H H, suitably slotted, are secured to the upper side of the bracket B" by suitable set-screws e c and are adapted to be adjusted so that their outer ends extend over the central part of the valve-seat below as near as possible, the same being made adjustable, so that the machine can be readily adjusted to different kinds of meters. Plates J J are provided with a layer of emery cloth or paper 7' on their under sides and have arms J J extending therefrom and journaled on the lower end of the crank-shaft E. The arms J are provided with longitudinal slots, which embrace the lower end of the pins G G. A pivot-seat t' is in the central part of the top of each of these grindingplates, and a similar pivot-seat is on the under side of the outer ends of the arms H. A pressure device consisting of a tube 1, with a conical hearing at the top, and a pin I, with a conical pivot at the bottom telescoping within the same, is provided for insertion between the arm H and the grinding-plate J, tension being kept on these devices by a coiled spring it within the tube I.

I have thus enumerated and described all of the parts of my improved grindingmachine and will now explain fullyits operation.

The meter is of course disconnected, and the pin 0 is secured to the gas-pipe thereof, and the bracket 13 is secured to this pin at a suitable height. The valve-lids are removed, and the grinding-plates J are brought to the desired position and the difierent parts adjusted to properly aline with the valve-seats. The

spring-pressure device I I is then inserted and will bear directly over the valve-seat against the plate J and afford a constant but yielding pressure. On turning the crank D the shaft E will be rotated, and owing to the lower end being formed like a crank of very short throw the arms J J will be caused to transferred to another and the valve-seats be.

ground at a very rapid rate. Thus it is possible to accomplish in a very short time the proper grinding of the valve-seats of a large number of meters, which has heretofore required the employment of a skilled mechanic and the operation being very laborious, requiring several hours to accomplish what by this simple and practical device can be accomplished in a few minutes.

I have shown the structure in the form which I consider best adapted and most praccease? tical for the use intended. aware that other devices might be made use of for securing a machine of this kind in position, and I desire to remark that for a given style of meter of course it would be necessary to make diEerent parts adjustable, as

they could be made so that the difierentpivoh centers would have the right relation for the to be understood that I claim such spring:

pressure device broadly. The particular form for the supporting-framework and the driving means are of course capable of very great variation, though, as I have before remarked, I consider that I have produced the structure in its most practical and simple form.

Having thus described my invention, what Iclaim as new, and desire to secure by Letters Patent, is-- 1. In a valve-grinder for gas-meters, the combination of a pin 0 with a coupling for uniting it with a gas-pipe on a meter; a frame B with adjusting-clamp B for embracing the said pin 0; a horizontal bracket B; a pair of depending pins G secured to theunder side of the bracket, B by the adjustable bases G; adjustable arms I-I secured to the top of said bracket 13, having suitable pivot-seats on their under side; a vertical crank-shaft E in the said bracket 13 and driving-gears F, F,

operated by the crank and shaft D, D; grinding-plates J, J, with pivot-seats on the top thereof; adjustable slotted arms J, J, extending from said grinding-plates, the slots of which embrace the downwardly-depending pins G, G, and the outer ends of which arms are secured to the crank-shaft E 5 spring-pressure devices provided with conical pivots at the top and bottom consisting of the tube I and the pin 1 telescoping within the same 5- and a spring '21, for holding the same normally under tension, placed between the pivot-seats on the arm 11 and the pivot-seats on the top of the grinding-plate J, all coae'ting substantially as described for the purpose specified.

2. In a valve-seat-grinding device, the combination of a frame B with means for securing the same to the gas-meter; a horizontal bracket B; a pair of depending pins G secured to the under side of the bracket B, by the adjustable bases G; adj ustable arms H secured to the top of said bracket B, having suitable pivot-seats on their under side; a vertical crank-shaftE in the said bracket B and driving-gears F, F, operated by the crank and shaft D, D; grinding-plates J, J, with pivot-seats on the top thereof; adjustable slotted arms J, J, extending from said grind- However, I am ing-plates, the slots of which embrace the downwardly-depending pins G, G and the outer ends of which arms are secured to the crank-shaft E; spring-pressure devices provided with conical pivots at the top and bottom consisting of the tube I and the pin 1 telescoping within the same; and a spring n for holding the same normally under tension, placed between the pivot-seats on the arm H and the pivotseats on the top of the grindingplate J, all coactin g substantially as described for the purpose specified.

3. In a valve-seat-grinding device, the combination of the frame B with means for securing the same to the gas-meter; a horizontal bracket secured to the said frame; a downwardly-extending pin secured to the under side thereof; a vertical crank-shaft supported by the said bracket with gears F, F for actuating the same; a grinding-plate with pivotseat at the top and a projecting slotted arm, the slot of which embraces the said downwardly-projecting pin, the'outer end of which is secured to the said crank-shaft; a springpressure device provided with a conical pivot at the top and bottom consisting of the tube I and pin 1 telescoped Within the same and forced normally outward by the coiled spring at within,all coacting for the purpose specified.

4. In a valve-grinding machine, the combination of a main frame; a downwardly-projecting crank-shaft therefrom; a pin extending down in proximity to said crank-shaft; a

nation of a suitable stationary frame; a grinding-plate; a spring-pressure device for insertion between the grinding-plate and the frame; and means of oscillating or rotating the grinding-plate, as specified.

In witness whereof I have hereunto set my hand and seal 'in the presence of two wit nesses.

ABEL HENNING. [n s] Witnesses:

FRED T. MOOMBER, HARRIETTE WARNER. 

